Apple vs Intel Interview Questions
Apple lists 300 LeetCode interview questions while Intel lists 25. They share 21 problems — 7% of Apple's bank and 84% of Intel's. Focus on the overlap first, then drill into 279 Apple-only and 4 Intel-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 21 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Intel.
Step 2 — Company-specific depth: Add Apple-specific problems like Merge Intervals, Design Hit Counter, Longest Common Prefix and Intel-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Apple skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
21 Shared Questions
High-priority problems to practice for both Apple and Intel.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Two Sum | Easy |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Palindrome | Easy |
| Rotate Image | Medium |
| Reverse Words in a String | Medium |
| Best Time to Buy and Sell Stock II | Medium |
| Maximum Subarray | Medium |
| Reverse Integer | Medium |
| Trapping Rain Water | Hard |
| Merge Two Sorted Lists | Easy |
| Climbing Stairs | Easy |
| Merge Sorted Array | Easy |
| Container With Most Water | Medium |
| Add Two Numbers | Medium |
| Top K Frequent Words | Medium |
| Copy List with Random Pointer | Medium |
| Count Primes | Medium |
Unique to Apple (279)
Problems in Apple's list that do not appear at Intel.
| Problem | Difficulty |
|---|---|
| Merge Intervals | Medium |
| Design Hit Counter | Medium |
| Longest Common Prefix | Easy |
| Rotate Array | Medium |
| Reverse Linked List | Easy |
| Valid Sudoku | Medium |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Product of Array Except Self | Medium |
| Kth Largest Element in an Array | Medium |
Unique to Intel (4)
Problems in Intel's list that do not appear at Apple.
| Problem | Difficulty |
|---|---|
| Find Consecutive Integers from a Data Stream | Medium |
| Maximum Nesting Depth of the Parentheses | Easy |
| Palindrome Number | Easy |
| Linked List Cycle | Easy |
Frequently Asked Questions
How many LeetCode questions do Apple and Intel share?
Apple and Intel share 21 LeetCode interview questions. 279 problems appear only in Apple's list and 4 appear only in Intel's list.
What topics overlap most between Apple and Intel?
The most common shared topics between Apple and Intel are Array (11 shared questions), Hash Table (5 shared questions), Dynamic Programming (5 shared questions), String (5 shared questions), Two Pointers (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Intel?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. Intel has 10 Easy, 14 Medium, and 1 Hard questions. Apple has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and Intel?
Start with the 21 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 4 Intel-specific questions to round out your prep.